Paraphrase  
Paraphrases convey the same meaning as the original sentences or text, but with different expressions in the same language. Paraphrase generation aims to synthesize paraphrases of a given sentence automatically [1]}, [2]}, [3]}.
For the experiments, we implement the standard sequence-to-sequence with attention model (LSTM-Attention) [4]} and use the default setting provided by OpenNMT [5]} on MSCOCO dataset as our baseline.
In Table REF , as we can see, by using our approach, we can achieve an improved performance of 7.3 BLEU score and 3.3 METEOR score.
